-first VST version for windows PC-features virtually identical to VST Macintosh 3.5 (without dat stream)-ASIO driver concept /w interface to MME-compatible audio hardware and multi-i/o audio routing for audio card /w the requisite features-send and master effects are much like the concept and features of VST Macintosh 3.5 although this version included a directx interface for connecting direct-x compatible plugins

-Major update with comprehensive improvements including:-increase of the internal resolution from 960ppq to 15,360 ppq-8 send fx, fx inserts of the pc version 3.55-high quality eq of the pc version 3.551-audio mixer /w subgroups + fx inserts (independant of audio hardware)-ReWire function for connecting the vst mixer to the virtual drum machine propellerheads rebirth 338 v2.0: up to 20 audio signals can be routed from rebirth directly to different vst mixer channels-marker track, folder tracks-definable window sets + key combinations-groove box (midi realtime quantizing w/ faders)-new midi toolbox-more than 300 new score featuresAll new stuff in VST Macintosh 4.0 will gradually be integrated in vst windows versions however according to steinberg a similar major update such as cubase vst 4.0 mac will not be released for windows pcs.